public async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = null)] HttpRequest req,
ILogger log)
{
// Check configuration
if (string.IsNullOrEmpty(_config["apiFunctionId"]) ||
string.IsNullOrEmpty(_config["apiFunctionSecret"]) ||
string.IsNullOrEmpty(_config["tenantId"]))
{
log.LogError("Invalid app settings configured");
return(new InternalServerErrorResult());
}
// Validate the bearer token
var validationResult = await TokenValidation.ValidateAuthorizationHeader(
req, _config["tenantId"], _config["apiFunctionId"], log);
// If token wasn't returned it isn't valid
if (validationResult == null)
{
return(new UnauthorizedResult());
}
// Initialize a Graph client for this user
var graphClient = _clientService.GetUserGraphClient(validationResult,
new[] { "https://graph.microsoft.com/.default" }, log);
// Get the user's newest message in inbox
// GET /me/mailfolders/inbox/messages
var messagePage = await graphClient.Me
.MailFolders
.Inbox
.Messages
.Request()
// Limit the fields returned
.Select(m => new
{
m.From,
m.ReceivedDateTime,
m.Subject
})
// Sort by received time, newest on top
.OrderBy("receivedDateTime DESC")
// Only get back one message
.Top(1)
.GetAsync();
if (messagePage.CurrentPage.Count < 1)
{
return(new OkObjectResult(null));
}
// Return the message in the response
return(new OkObjectResult(messagePage.CurrentPage[0]));
}
public async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)] HttpRequest req,
ILogger log)
{
// Check configuration
if (string.IsNullOrEmpty(_config["webHookId"]) ||
string.IsNullOrEmpty(_config["webHookSecret"]) ||
string.IsNullOrEmpty(_config["tenantId"]) ||
string.IsNullOrEmpty(_config["apiFunctionId"]))
{
log.LogError("Invalid app settings configured");
return(new InternalServerErrorResult());
}
var notificationHost = _config["ngrokUrl"];
if (string.IsNullOrEmpty(notificationHost))
{
notificationHost = req.Host.Value;
}
// Validate the bearer token
var validationResult = await TokenValidation.ValidateAuthorizationHeader(
req, _config["tenantId"], _config["apiFunctionId"], log);
// If token wasn't returned it isn't valid
if (validationResult == null)
{
return(new UnauthorizedResult());
}
var requestBody = await new StreamReader(req.Body).ReadToEndAsync();
var jsonOptions = new JsonSerializerOptions
{
PropertyNamingPolicy = JsonNamingPolicy.CamelCase
};
// Deserialize the JSON payload into a SetSubscriptionPayload object
var payload = JsonSerializer.Deserialize <SetSubscriptionPayload>(requestBody, jsonOptions);
if (payload == null)
{
return(new BadRequestErrorMessageResult("Invalid request payload"));
}
// Initialize Graph client
var graphClient = _clientService.GetAppGraphClient(log);
if (payload.RequestType.ToLower() == "subscribe")
{
if (string.IsNullOrEmpty(payload.UserId))
{
return(new BadRequestErrorMessageResult("Required fields in payload missing"));
}
// Create a new subscription object
var subscription = new Subscription
{
ChangeType = "created,updated",
NotificationUrl = $"{notificationHost}/api/Notify",
Resource = $"/users/{payload.UserId}/mailfolders/inbox/messages",
ExpirationDateTime = DateTimeOffset.UtcNow.AddDays(2),
ClientState = Notify.ClientState
};
// POST /subscriptions
var createdSubscription = await graphClient.Subscriptions
.Request()
.AddAsync(subscription);
return(new OkObjectResult(createdSubscription));
}
else
{
if (string.IsNullOrEmpty(payload.SubscriptionId))
{
return(new BadRequestErrorMessageResult("Subscription ID missing in payload"));
}
// DELETE /subscriptions/subscriptionId
await graphClient.Subscriptions[payload.SubscriptionId]
.Request()
.DeleteAsync();
return(new AcceptedResult());
}
}
